Quote:
Originally Posted by Buckle
This is a smaller factor than I would have anticipated.
ECM found a factor in curve #1, stage #1
Sigma=3460786319450698, B1=3000000, B2=300000000.
UID: Buckle/G801, F19 has a factor: 646730219521, AID: A5CC03C1F2227056DE35CDEAC3E17011

This is a known factor equivalent to 308385*2^21+1.